4f6e5bf122b71cee799ac276ce305ba6df7fa56de0137312af844bdff9a7d516

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
25-03-2024 12:46

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General

Target

2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe
Size

41KB
MD5

71179ae256b4bac3823a7bd30c6fa16d
SHA1

c5742077851ca7b6d9cd469867e780e4109a6bb2
SHA256

4f6e5bf122b71cee799ac276ce305ba6df7fa56de0137312af844bdff9a7d516
SHA512

8dbbfe52519e35a4c1643edc554958130b5ed323366de3e9043ba3045ab3123171aa680417155afbd9d192742186eabf81d869709dc06ccdb9693ee657793fe5
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRSlv:m5nkFNMOtEvwDpjG8hhXIv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/180-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002333a-13.dat	CryptoLocker_rule2
behavioral2/memory/180-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/180-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/180-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002333a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/180-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5068	misid.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 180 wrote to memory of 5068	180	2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe	98
PID 180 wrote to memory of 5068	180	2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe	98
PID 180 wrote to memory of 5068	180	2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_71179ae256b4bac3823a7bd30c6fa16d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:180
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:5068

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3868 --field-trial-handle=2536,i,8161505972217706694,705854963991409854,262144 --variations-seed-version /prefetch:8
1⤵
PID:3616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
41KB

MD5
207ca045af0d9a1450e0cbe174ae04c9

SHA1
2318f820bcbb37cfbd9d0011f1f82247d24c834f

SHA256
90fbf636ebedb0cd0ee1b390ce8aee9d4d7fe36a9919daacacbdde9a08163b7e

SHA512
a6cde594d9150478ee96502d954ffc60fcd2b9d30e2ecbf5162bef04c3b0ea6370ed128db38bb9e6f6429c4e7d5816ae9349299c97e2b8069de10239991e92ed

Download Submit
memory/180-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/180-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/180-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/180-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/180-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/5068-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/5068-21-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/5068-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download